After reading more about the ballet "The Invitation" I am hesitant to buy tickets for a small student group I was planning to bring to the June 4 matinee performance. The subject matter is rape, and some reviews make it seem like it is rather graphic. The disclaimer on the Royal Ballet website says "adult material" is involved. All students are high-school aged, but still not sure it is appropriate. Any information on this piece from any who have seen it is much appreciated!